The original Pokemon GO Bot.

One of the first Pokemon GO bots to be released to the public.

The Pokemon GO Bot, often stylized as PGOBot, is one of the first well running
bots avaliable not only on Windows, but Linux and Mac as well. It was created
by Jasper Abbink, a developer from the Netherlands. As the bot started gaining
momentum, many started to jump in and contribute to the bot. Now it is one of
the most popular bots Pokemon Go has ever seen.
These are the installation steps:

Only that is not enough, check the whole stacktrace for the correct error.

After login I see Accepting ToS and get a RemoteServerException: Your account may be banned! please try from the official client.

If you CAN login to the official client, complete the tutorial (catch your first pokemon, touch your first pokestop) and try again.
If you CAN'T login in the official client but see "Error fetching game data": RIP items/eggs/pokemons, your account got permabanned. You knew this was possible since you did read and violate the ToS of the official game.

By using this bot, you are acknowleding the fact that you could get banned and lose all items with it. Jabbink and other contributors are not resposbible for what you do with this bot. As long as you use the bot responsibly you should be ok however.